stanwood



*(No Model.) 2 Sheets-Sh'eet 1.

` J. B. STANWOOD.

CROSS HEAD FOR %TEAM ENGINES.

0 Patented May 19,1885.

No.318,216. F, j

WITNESSBS INVENTOR ATTORNEY 2 Sheets-Sheet 2.,

Patented May 19, 1885.

J. B. STANWOOD.

GROSS HEAD FOR STEAM ENGINES.

xgmw (No Model.)

NVENOR,

& m QM ATTORNEY/S.

" UNITED STATES PATENT OFFICE-e JAMES B. STANWOOD, OF CINCINNATI, OHIO,ASSIGNOR ro THE LANE a BODLEY COMPANY, OF SAME PLACE.

' CROSS-HEAD FOR S TEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 318.216, date& May 19,1885.

Application filed October'l, 1854. (No model.)

.To all whom it may concern:

Be it known that I, JAMES B. STANwooD,a citizen of the United States,residing at Cincinnati, Ohio, have invented new and useful Improvementsin Cross-Heads for Steam- Engines, of which the following is aspecification.

My invention relates to the eross-heads of steam engines employingdouble A parallel guides; and Vit consists in certain devices foradjusting the slippers or bearing-surfaces of the cross-head with'respect tothe slides, and in means for securing the same inultimateposition; and it likewise consists in the employment of means toproduce the above result, which at the same time will permit theslippers to be removed endwise from the cross-head without removing thelatter fron the slides.

Heretofore it has been customary,-when use has loosened or worn thebushings on the crosshead next the 'guides to remove. the cross-headfrom the guides and insert newfbushings, or repair the old, so as totake 'np thelost motion and make a good fit in theguides This istroublesome and causes much delay, and my invention seeks to do awaywith this difficulty, and substitutes a Construction of the crossheadand Slippers whereby the Slippers can at any time be taken out of thecross-head for any purpose in a short time without disturbing thecross-head in the slides.

These improvements will be readily understood in connection with theaccompanying drawings, in which mechanism illustratin g my invention isshown, and in which-- Figure 1 is a longitudinal vertical section of oneside of vertical cross-head embodying my improvement. Fig. 2 is avertical cross-section of the same. Fig. 3 is an end view of the same.Fig. 4 is a vertical side elevation of a cross-head complete embodyingmy improvement, and Fig. 5 is an end elevation of the same.

The views taken are sufficient for the illustration of my improvement,and the parts hereinafter mentioned are designated by letters ofreference.

In the drawings,C represents the crosshead frame.

B represents the slippers containing in their outer surface the Babbittor other bushing; A,

` the wedges which have full bearing lengthwise over the Slippers; E,the'horizontal adjustingscrews, one above, the other below, threaded in'the projecting lugs O on the wedges, and shouldered in the' sides ofcross-head frame. i

D are vertical set-screws, threaded in the slippers and shouldered inthecross-head frame, whereby the wedge is clanped in final position, andwhich upon removal allow-the slippers to be withdrawn endwiseindependentof the cross-head. The `slippersB havetrans- Verse inclned inner faces,`a, in contact with similar faces on the 'wedge-blocks A; Pro-j jectinglugs O on the latter receive the horizontal adjusting-screws E, threadedtherein, by` manipulation of which the wedges are moved and the slippersdrawn away from or forced nearer to the slides.- Retracted lips b c atthe sdes of the slippers furnish security from lateral displacement incontact with the sides of the cross-head frame C. A transverse slot inthe.base-plate of the cross-head jframe (shown in section in Fig.l)"allow s passage of the projecting lug O of the slipper'. This slotextends across the frame of cross-head,limited by its sides.

The principal use of the adjustment is to and bushings; but asadjustment will sometimes be needed in both directions I shoulder thehead of the adjusting-screw E, as shown in Fig. 2, (performing theadjustment by manipulating the head H,) and inserta cotter ,through thenut at the other endto make it also a shoulder. The wedges have full'bearing lengthwise over the Slippers and are slotted to allow passageof the clamp-screws D, (transversely shown in section in Fig. 1 and indotted lines elsewhere.) This secures a regular and even adj ustm ent,and one not afterward affected by the movement of the crosshead in' theslides. i

Instead of the lips projecting downward at the ends of the cross-head&amesuch as are usually employed to hold the Slippers in place whenthecross-head moves in the slides-I make the clamping-screws D performthat service by threading them in thekslippers. Upon tightening thesethey not only hold the Slippers firm, but clamp and bind the latter totake up lost motion from wear of the slides IOO the wedge-blocks,andthese,in connection with the wedge-adjusting screws E, securely hold theslippers from longitudinal displacement. This Construction, moreover,allows withdrawal of the Slippers endwise in the slides, upon taking outthe screws D, should occasion require the renewal of the bushings orother repairs, without removing the crosshead.

The operation of adjusting the slippers is as follows: To take up lostmotion I loosen the vertical screws D, turn the screw E by head H in theproper direction to force the wedge-block A outward against the slipper,and when sufficiently extended clanp it firmly by tightening thevertical clamp-sc'ews D.

" In this operation care will be taken to preserve the alignment of thepiston-rod by adjusting each slipper the amount required. The downturnedl ips c and b will preserve the proper vertical and lateral adjustment.

Having now described and illustrated my invention, I claim and desire tosecure by Letters Patent of the United Statesl. In a double-guide-enginecross-head, wedges A, adjustable transversely to the line of the guides,having full longitudinal bearing on both cross-head and slippers, andprovided with adjusting-screws adapted for wedging out the slippers inCloser contact with the slides, substantially as described.

2. In an engine cross-head, in combination with wedge-blocks A, havingfull longitudinal hearing on cross-head and Slippers, clampscrews D,shouldered in the cross-head frane and tapped into the Slippers,substantially as i and for the purpose specified.

3. In an engine cross-head, slippersB, adjustably Secured to thecross-head`by clampscrews D, wedge-blocks A, and adjustingscrews E, incombination, substantially as set forth.

4. In an engine cross-head, Slippers B, having transverse inelined innersurfaces, a, in combination with wedge-blocks A, and adjusting-screws E,threaded in p'rojecting lugs O on the wedge-blocks, substantially as andfor the purpose specified.

5. In combination with the cross-head frame C and Slippers B, havingside flanges, b c, the wedge-blocks A, formed with lugs O, andadjusting-sc'rews E and set-screws D, substantially as and for thepurpose specified.

6. The herein-described arrangement in an engine cross-head of atransverse wedgeblock A, having full longitudinal hearing on theslipper, and provided with lug O, having threaded or shouldered thereinadjustingscrew E, passed through or threaded in the sides of cross-headframe, and with slotted ends for passage of clamp-screws D, and slipperB, with retracted flanged sides b c, inclined inner hearing-surface, a,and having threaded therein at the ends clamp-screws D, and adapted incontact with the wedgeblock and clamping-screws to be adjusted withrespect to the engine-slide, or to be removed from the cross-headindependent thereof, the whole combined and Operating substantially asdescribed.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JAMES B. STANWOOD.

W'itnesses:

- B. M. HOSEA, It. M. HOSEA.

